The Arsia Mons Elongated Cloud

The mysterious, thin, elongated cloud was noticed on Mars again in mid-July. We asked you on Twitter if you wanted to know more about this curious cloud and 94% voted yes. So we gathered the facts that are known so far. Enjoy!

What is the Arsia Mons Elongated Cloud?

The Arsia Mons Elongated Cloud (AMEC) is a lee cloud that is spotted over the 20-kilometers…